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WO2008051973A8 - Capacitive sensing for washroom fixture - Google Patents

Capacitive sensing for washroom fixture

Info

Publication number
WO2008051973A8
WO2008051973A8 PCT/US2007/082237 US2007082237W WO2008051973A8 WO 2008051973 A8 WO2008051973 A8 WO 2008051973A8 US 2007082237 W US2007082237 W US 2007082237W WO 2008051973 A8 WO2008051973 A8 WO 2008051973A8
Authority
WO
WIPO (PCT)
Prior art keywords
fixture
capacitive sensing
receptacle
capacitive
sensing system
Prior art date
Application number
PCT/US2007/082237
Other languages
French (fr)
Other versions
WO2008051973A1 (en
Inventor
Graeme S Bayley
Kenneth A Kreitzer
Nathaniel J Kogler
Steven R Reckamp
Nick B Guzzardo
Original Assignee
Bradley Fixtures Corp
Graeme S Bayley
Kenneth A Kreitzer
Nathaniel J Kogler
Steven R Reckamp
Nick B Guzzardo
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bradley Fixtures Corp, Graeme S Bayley, Kenneth A Kreitzer, Nathaniel J Kogler, Steven R Reckamp, Nick B Guzzardo filed Critical Bradley Fixtures Corp
Priority to DE112007002378T priority Critical patent/DE112007002378T5/en
Priority to GB0906660A priority patent/GB2456937B/en
Publication of WO2008051973A1 publication Critical patent/WO2008051973A1/en
Publication of WO2008051973A8 publication Critical patent/WO2008051973A8/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/05—Arrangements of devices on wash-basins, baths, sinks, or the like for remote control of taps
    • E03C1/055—Electrical control devices, e.g. with push buttons, control panels or the like
    • E03C1/057—Electrical control devices, e.g. with push buttons, control panels or the like touchless, i.e. using sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Domestic Plumbing Installations (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)

Abstract

A capacitive sensing system (100, 1230) and a method for a hand washing lavatory system is disclosed. The lavatory system comprises a receptacle defining a hand washing area, a fixture configured to deliver water to the receptacle, and a capacitive sensing system configured to detect the presence of a user and actuate the fixture. The capacitive sensing system (100, 1230) comprises a first sense electrode (300, 1342) coupled to the receptacle a configured to measure a first capacitive value, a second sense electrode (305, 1344) coupled to the receptacle spaced apart from the first sense electro and configured to measure a second capacitive value, and a circuit (150) configured to control operation of the fixture in response to a change in first capacitive value relative to the second capacitive value.
PCT/US2007/082237 2006-10-24 2007-10-23 Capacitive sensing for washroom fixture WO2008051973A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112007002378T DE112007002378T5 (en) 2006-10-24 2007-10-23 Capacitive measurement for washroom fittings
GB0906660A GB2456937B (en) 2006-10-24 2007-10-23 Capacitive sensing for washroom fixture

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US85382206P 2006-10-24 2006-10-24
US60/853,822 2006-10-24
US92708407P 2007-05-01 2007-05-01
US60/927,084 2007-05-01

Publications (2)

Publication Number Publication Date
WO2008051973A1 WO2008051973A1 (en) 2008-05-02
WO2008051973A8 true WO2008051973A8 (en) 2008-09-25

Family

ID=39078557

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/082237 WO2008051973A1 (en) 2006-10-24 2007-10-23 Capacitive sensing for washroom fixture

Country Status (4)

Country Link
US (2) US8381329B2 (en)
DE (1) DE112007002378T5 (en)
GB (1) GB2456937B (en)
WO (1) WO2008051973A1 (en)

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GB2456937A (en) 2009-08-05
US9328490B2 (en) 2016-05-03
WO2008051973A1 (en) 2008-05-02
US8381329B2 (en) 2013-02-26
DE112007002378T5 (en) 2009-09-03
US20080109956A1 (en) 2008-05-15
GB0906660D0 (en) 2009-06-03
US20130219614A1 (en) 2013-08-29

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